To solve the problem of partner selection in establishing dynamic alliance in agile manufacturing,a genetic algorithm based on the analysis to the limitation of traditional selection method was designed and the corresponding algorithm model was constructed.The method for individual coding and initial population generating,the selection method for combining probability elimination with roulette and the design method for mutation operator about coding cycle value were discussed.Example analysis verified the stability,reliability and high convergence speed of the algorithm.It is concluded that the algorithm is beneficial for solving the partner selection problem in dynamic alliance.